绝对音调器 apparatus for absolute pitch
调音器 Tuner ; variator ; Pitch Pipes ; Tuner gStrings ; tuner
音量调节器 volume ace ; [电子] volume adjuster ; audiomanager pro ; Music Volume EQ
音调控制器 [电子] tone controller ; PITCH ; pitch changer
吉他调音器 AP Guitar Tuner ; g-tune ; GuitarTuna ; clear tune
变调蜂音器 variable-note buzzer ; note buzzer
音量调整器 Volume Ace ; volume regulator ; volume controller
语音调制器 speech modulator ; Vomo
半音调音器 chromatic tuner
根据多普勒效应，光被离子反射后，靠近激光器的光的频率会高于远离激光器的光的频率，（日常生活中，救护车警报器的音调随着车的远近也变化，就是这个道理）这才有可能测量先前对离子施加的力的大小。
(An everyday example of this effect is the change of pitch of an ambulance siren as it approaches and recedes.) It was thus possible to measure the force applied to the ions.
试想救护车上的报警器，经过观测者的时候，其音调会呈现出由高到低的变化。
Think of the pitch of a siren on an ambulance, which goes from high to low as it passes the observer.
您可以使用压缩器工具将高音和低音调的更相近一些，这样即使是小手机扬声器声音也会好听。
You can use the compressor tool to make the highs and lows a little closer so that the sound is good even from a tiny phone speaker.
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